How do astronomers measure extreme distances?

12/02/2014

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Spotting objects that are very distant, and finding their distances
is fascinating! When we look at the night sky, we get to observe a flat,
two-dimensional view. So how do astrophysicists find the huge distances of
stars and galaxies from Earth? Yuan-Sen Ting from TED-Ed demonstrates how
trigonometric parallaxes, standard candles benefit us in determining the huge distance
of objects even numerous billion light years away from Earth.